linux-kernel - Re: [PATCH] PCI: xgene: Fix IB window setup

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Message-Id: <163828263383.20216.14338890370157557636.b4-ty@arm.com>
Date:   Tue, 30 Nov 2021 14:30:46 +0000
From:   Lorenzo Pieralisi <lorenzo.pieralisi@....com>
To:     Krzysztof Wilczyński <kw@...ux.com>,
        Andrew Murray <amurray@...goodpenguin.co.uk>,
        Rob Herring <robh@...nel.org>,
        Toan Le <toan@...amperecomputing.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>
Cc:     Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Stéphane Graber <stgraber@...ntu.com>,
        stable@...r.kernel.org, linux-pci@...r.kernel.org
Subject: Re: [PATCH] PCI: xgene: Fix IB window setup

On Mon, 29 Nov 2021 11:36:37 -0600, Rob Herring wrote:
> Commit 6dce5aa59e0b ("PCI: xgene: Use inbound resources for setup")
> broke PCI support on XGene. The cause is the IB resources are now sorted
> in address order instead of being in DT dma-ranges order. The result is
> which inbound registers are used for each region are swapped. I don't
> know the details about this h/w, but it appears that IB region 0
> registers can't handle a size greater than 4GB. In any case, limiting
> the size for region 0 is enough to get back to the original assignment
> of dma-ranges to regions.
> 
> [...]

Applied to pci/xgene, thanks!

[1/1] PCI: xgene: Fix IB window setup
      https://git.kernel.org/lpieralisi/pci/c/c7a75d0782

Thanks,
Lorenzo